name: Links (Scheduled → Issue)

on:
  workflow_dispatch:
  schedule:
    - cron: "0 11 * * 1" # Mondays 11:00 UTC

permissions:
  contents: read
  issues: write

jobs:
  lychee:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Run lychee and write report
        id: lychee
        uses: lycheeverse/lychee-action@v2
        with:
          args: >
            --config lychee.toml
            --verbose
            --no-progress
            --output lychee-report.md
            --format markdown
            **/*.md
        continue-on-error: true

      - name: Create or update issue if broken links found
        if: steps.lychee.outcome == 'failure'
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');

            const title = 'Broken links detected';
            const reportPath = 'lychee-report.md';
            const report = fs.existsSync(reportPath) ? fs.readFileSync(reportPath, 'utf8') : '(No report file found)';

            const { data: issues } = await github.rest.issues.listForRepo({
              owner: context.repo.owner,
              repo: context.repo.repo,
              state: 'open',
              per_page: 100
            });

            const existing = issues.find(i => i.title === title);

            const body = `This is an automated report from a scheduled link check.\n\n${report}`;

            if (existing) {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: existing.number,
                body
              });
            } else {
              await github.rest.issues.create({
                owner: context.repo.owner,
                repo: context.repo.repo,
                title,
                body
              });
            }